Gabbro, gab′ro, n. a rock composed of feldspar and diallage—also Euphotide.
Bronz′ing, the process of giving the appearance of bronze; Bronz′ite, a lustrous kind of diallage.
Also, in minute veins, in detached masses of diallage and serpentine rocks, on the west shore of Lake Michigan.
diallage, an altered form of the mineral augite, with a lamellar structure, and a submetallic lustre on its planes of separation.
It has compact Felspar for its base, in which are imbedded crystals both of diallage and Hornblende.
Essentially it is a crystalline-granular compound of plagioclase, generally Labradorite and diallage.